Window construction



I Nov. 28, 1939. H. MOCKL] I 2,181,763

WINDOW CONSTRUCTION 7 Filed May 28, 1958 2 Sheets-Sheet 1 2'? MM M ATTO R N EYS Nov. 28. 1939. H. MOCKLI WINDOW CONSTRUCTION Filed May 28, 1958 2 Sheets-Sheet 2 INVENTOR Hans Moe/fill) BY M %M- M ATTO RNEYS Patented Nov. 28, 1939 UNITED STATES PATENT OFFICE 9 Claims.

The present invention relates to window constructions of the type, in which the lower or inner window sash is slidable along sash tracks, and swingable about pivotal supports.

One object of the present invention is to provide simple and improved means for pivotally supporting a window sash, to a window frame.

Another object is to provide simple and effective means for pivotally supporting and holding sash tracks in angular position against rattling.

Another object is to provide simple and improved means for holding the window sashes in selective slide positions, and against rattlin without the use of the-usual sash weights.

Another object is to provide sash tracks of simple, rugged and inexpensive construction.

Another object is to provide simple, effective and easily manipulable means for locking pivotally mounted sash tracks in vertical position, against swlngable movement.

Another object is to provide simple, easily removable cross-bracing means for a pair of opposed pivotally supported sash tracks.

Various other objects and features of the invention will be apparent from the following particular description, and from an inspection of the accompanying drawings, in which:

Fig. 1 is a perspective of a window construction embodying the present invention, and showing the sash tracks interlocked, and the window sashes in vertical closed position.

Figs. 2 and 3 are sections taken on lines 2-2 and 3-;3 of Fig. 1 respectively.

Fig. 4 is a section taken on line 4-4 of Fig. 3, but on a somewhat enlarged scale,

Fig. 5 is a section taken on line 5-5 of Fig, 2 on an enlarged scale, and shows details of the means for locking the lower sash' tracks in vertical position,

Fig. 6 is a perspective showing a portion lower window sash,

Fig. 7 is a front perspective view of one of the lower sash tracks,

Fig. 8 is a rear perspective view of the sash track of Fig. 7,

Fig. 9 is a front perspective view of one of th upper sash tracks,

Fig. 10 is a section taken on line Ill-l0 of Fig. '7, but on a somewhat enlarged scale,

Fig. 11 is a perspective showing the removable cross-piece for the lower end of the lower sash tracks,

Fig. 12 is a section taken on line I2--l2 of Fig. 2, but shown on a somewhat enlarged scale,-

Fig. 13 is a detailvertical section showing one of the lower sash tracks in one angular position,

of the and Fig. 14' is a section similar to that of Fig; but showing the lower sash tracks in another l mi angular position.

In the form of the invention illustrated, there is provided a frame window "I, having a lintel l l at the top, a sill I2 at the bottom, and upright jamb pieces l3 at the sides. Upper vertical sash tracks H are aflixed to these jamb pieces l3 respectively by any suitable means, such as screws l5, and the lower sash tracks Iii are pivotally mounted to said jamb pieces, by means of pivot pins 11, as will be hereinafter more fully described, so that said lower tracks can be brought into vertical alignment with said upper tracks, or swung out of the plane of the window frame. The meeting or adjoining ends l8 of the two sets of sash tracks i4 and I6 are conformably bevelled, as shown in Fig. 2, to permit angular movement of the lower tracks i6, and to afford continuity between the two sets in their vertically aligned positions,

As a feature of the present invention, each of the lower tracks 16 comprises a longitudinal strip of metal 2|! (Figs. '7 and 10) stamped to form a pair of adjoining channels 22, separated by a central U-shaped rib 23. Welded or otherwise secured in each channel 22 is an inset, stamped from 'sheet metal to form a U-shaped sash rail 25, dividing said channel into a pair of adjoining guide grooves 26, and having a pair of outward flanges 21a, seated against the base of said channel. By means of this construction, each of the lower tracks IE will have two rails to receive the respective window sashes 21 and 28, separated by the rib 23.

The upper tracks H are constructed of sheet metal in the same way as are the lower tracks Hi, toprovide on each one a central rib 23a, and a pair of sash rails 25a, these being in alignment withthe corresponding central rib 23, and

sash rails 25 of the lower track, when the latter is in vertical position, to permit the slidable movement of window sashes 21 and 28 from. top to bottom of the window frame. The stiles 29 of these window sashes are provided with outer side grooves 30 (Fig. 6), each defining a pair of opposed fianges 3!, adapted to straddle the respective rails 25 and 25a.

In order to avoid the use of conventional sash weights, and to provide frictional means whereby the window sashes 2i and 28 may be held in slide position on the sash tracks, each of the stile grooves 30 has fixed therein a pair of spring devices, each including a pair of bowed leaf springs 32, lapped against the inner sides of the stile flanges Shana integrally joined by a cross-piece 33, which is seated against the base of the groove 30, and which is secured thereto by screws or the like. These leaf springs 32 frictionally engage the sides of the rails 25 and 25a to Hold the. window sashes in slide position, and since the rattling of these sashes is due primarily to the play of said sashes transversely of the planes thereof,

these springs 32 will also serve to hold said sashesagainst rattling.

- For'pivotally mounting the lower tracks Hi to the jamb pieces 13, the lower portion of each of said pieces has fixed into a recess, therein a metal to pass therethrough. The lower portions of the rail flanges 21a are cut away at 40a, to clear the head of the pivot pin H, as shown in Figs. 4 and 12'. In normal-upright or angular position of the lower tracks M5, the pivot pins ll pass through the upper ends of the respective slots 38, as shown in Fig. 13; These pivot pins-i1 can be adjusted to tighten the lower tracks it against undeslrable play.

In order to hold the lower tracks it against rattling in their angular. position, there is provided a pair of side weather strips 6| of wood or the like, fixed to the respective jamb pieces i3,

and abutting the outer edges of the upper tracks it (Figs. 2, 13 and 14). The lower ends of these strips dl extend below the upper sash tracks Id and above the window still 62, and are desirably covered respectively with metal wear platesfit, as shownin Figs. 13 and 14. Connected to each of the side flanges 6d "of the lower tracks 16 is a bowed leaf spring 65, fixed at' its ends by soldering or the like to. its respective track flange id, and yieldably engaging the lower metal covered end-of its respective weather strip M in angular positions of said tracks it, to hold said tracks in said positions, while permitting angular movement thereof. These strips #35 also serve as limiting stops, to alignthe lower tracks 5 with the upper tracks id in the upright position of said lower tracks, as shown in Figs. 2 and 3. Also, the lower edges of the tracks l6, beyond the springs 65 engaging the lower ends of the strip M, will hold said tracks in limited angular position.

If it is desired to swing the lower tracks it to a horizontal position, in which the glass panes of the sashes are easily accessible for washing, these tracks are pulled outwardly, so that the pivot pins I! pass through-fig lower portions of the elongated slots 38. In this position, the lower tracks is are clear from the lower ends of the strips ll, arid said tracks willbe free to move angularly into the horizontal position shown in Fig. 14. 'In this position, the window stool :66 serves as alimiting stop for the lower tracks id.

Fixed to the window frame it, and abutting the inner edges. of the upper tracks it, is a pair of side weather strips of wood or the like, the

lower ends of which terminate substantially at the lower ends of said tracks. Fixed to the inner edge of each of the lower tracks 16 is a weather strip 52, correspondingv in cross-section'to that of the upper weather strip 5!. The meeting or adjoining ends 53 of these strips 55 and 52 are conformably bevelled, as shown in Fig. 1, to permit angular movement of said strips 52, while affording continuity between said strips 5i and 52 in their aligned position.

In order to affix the weather strips 52 to the respective lower'tracks it, each of said tracks has welded or otherwise secured thereto a pair of lugs 56, extending in notches 55 of the corresponding strips 52, as shown in Figs. 1, 7, 8 and 10. Passing through the strips 52, and threaded into the lugs 55. are the screws 56.-

- Extending along the window stool 46, is a weather strip 51, spaced at its ends from the 'jamb pieces l3, to provide a clearance for the angular movement of the lower tracks l6, as shown in Figs. 1, 13 and 14. 1

Connecting the lower ends of the two lower tracks l6, so as to utilize these tracks, is a crosspiece 60 (Figs. 2, 4 and 11) stamped from, a single sheet of metal to forma hollow U-shaped' rib v 6|, and formed with a pair of notches 62 atthe ends to receive the central track ribs 23. ,The

lower ends of the tracks l6 are provided with transverse flanges 63, upon which the cross-piece 60 may be seated, and said cross-piece has a projecting pin 64- welded or otherwise fixed in one end of the rib 6|, and adapted to be slipped into. 5

a hole 66 of a rail- 25, and a slide bolt 61 in the other end of said rib, adapted to slide in a-hole 66a of an opposed rail 25. -This slide bolt 61 has an ofiset handle 68, projecting through an elongated By means of this construcw slot 69 in the rib 6|. tion, the two lower tracks 16 may be swung about their pivotal support as a unit, even when the sashes 21 and 28 have been removed to permit detachment of said tracks from the window frame. I

In order to prevent the rib GI and the slide bolt handle 68 from interfering with the sliding of the inner w'mdow sash 21 to the bottom of the window opening, the bottom of said sash has a groove Ill (Figs. 4 and 6) and a hole H into which extend said rib and said handle 68 respectively in the lowermost position of said sash.

The window sill i 2 is inclined, as shown in Figs. 2, 13 and 14 to drain rainwater and the liketo the outer side of the windowopening, and'the lower ends of the lower tracks 56 are correspondingly inclined, and extend substantially to said sill, so that the cross-piece 60, in the upright position of said tracks, will lie substantially flat against said sill, as shown in Fig.2, and serve also as a protective covering for said sill.

' In order to lock the lower tracks iii in the upright position shown in Fig. 1, each of the hollow ribs 23a of the upper tracks 14 has a slide bolt 35 (Figs. 2, 5 and 9). having a transverse knob 76, extending through an elongated slot ll-in said rib. Since the rib 23a of each upper track M is aligned with the corresponding rib 23 of the lower track E6 in the upright position of the latter, as shown in Fig. 1, when the slide bolts are moved into the lower ribs 23, and thereby lock the lower tracks 46 against angular movement. In order to permit the lower tracks I 6 to be locked in slightly tilted position with respect to the window frame, the lower ends of the slide bolts 75 areadapted to slide into the outer rails 25 of said lower tracks, when said rails are directly below said bolts.

For that purpose, the lower projectable ends of the bolts are reduced in width to correspond to the widths of the rails 25. In order to reduce the cross-section of the lower ribs 23, so

' that the reduced ends of the bolts 15 have' no extensive free play therein, there is welded or otherwise secured into each of said ribs 23, a U- shaped inset '18 (Fig. 10), which not only serves to form with one wall of the rib a housing for snugly receiving its corresponding slide bolt, but also serves to impart rigidity to the lower tracks. If desired, instead of n'iaking the width of the rib 23 greater than that of the rail 25, it maybe the same, so that the lower ends of the slide bolts 15 need not be reduced as indicated.

The slide locking bolts 15 being operable only from the inner side of the window construction,

when the sashes 21 and 28 are in closed position,

shown in Fig. 1, unauthorized tampering therewith from the outside is assured. Also these boltsqi are'in position to be almost concealed from view, so that they donot mar the appearance of the window construction.

In the operation of the described window construction, the lower tracks 16 may be locked in upright position, as shown in Fig. 1, and in the manner already indicated, so that the two window sashes 21 and 28 may slide up and down. The two windows may be locked in this vertical position against sliding movement by the conventional sash lock 80. If it is desired to retain the window sash 28 in its uppermost position, and incline the lower window sash 21, the slide bolts 15 are moved upwardly, and said window sash 21 pulled angularly outwardly. If it is desired to move both of the window sashes 21 and 28 into angular position, these are lowered to their lowermost position between the lower tracks 16, and then angularly pulled out, as already indicated. If it is desired, for instance, to install a window screen 8|, both of the window sashes 21 and 28 may be lowered onto the lower tracks 16, and said tracks with the window sashes therebetween moved out angularly to permit the individual sashes to be slid out from between said tracks. This not only permits the easy installation of the screen 8 l, but also enables the window panes of the sashes to be cleaned in an expeditious manner without the usual toil. In the summer, when it is desiredv to obtain the maximum amount of ventilation, both of the window sashes 21 and 28 may be removed from the tracks Iii, as already indicated. Also, if it is desired to remove the lower sash tracks 16, this can be effected in a very simple manner.

As many changes could be made in the above construction, and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

' 1. A window construction,comprising a window frame, having side jamb pieces, and a sill, a pair of opposed metal sash tracks pivotally supported near their lower ends to said jamb pieces respectively, and a metal cross-piece carried by the lower ends of said tracks, movable therewith in the pivotal movement of said tracks, and forming a protective covering for said sill in the upright position of said tracks, transverse flanges on said tracks at their lower ends limiting the downward movement of said cross-piece, and locking means connecting the ends of said cross-piece and said tracks, and releasable to permit removal of said cross-piece'from said tracks upwardly and away from said flanges.

2. A window construction, comprising a window frame, having side jamb pieces, and a sill, a pair of opposed metal sash tracks, pivotally supported near their lower ends to said Jamb pieces respectively, and a metal cross-piece for said tracks, having 9. lug at one end for engagement in a hole in the lower end of one or said tracks, and a slide bolt at the other end for engagement in a hole at the lower end of the other track.

3. A window construction, comprising a pair of opposed pivotally supported sash tracks, a fixed member on the outer sides of said tracks, and engaging the outer edges of said tracks in upright position thereof to serve as a stop for said tracks in said position, and spring means between one of said tracks and said member for resisting angular movement of said tracks.

4. A window construction, comprising a pair of extending below the lower end of said latter track for aligning the lower tracks with the respective upper tracks in the upright position of said lower tracks, and means between the lower end of said strip and one of said lower traclrs for resisting while permitting angular movement of said tracks.

5. A window construction, comprising a pair of opposed pivotally supported sash tracks, a flxed member, and a bowed leaf spring secured at its ends to the outer edge of one of said tracks, and engaging said member to resist said pivotal movement.

6. A window construction, comprising a pair of opposed upper sash tracks, a pair of lower pivotally supported opposed sash tracks, a pair of strips along the outer edges of said upper tracks respectively, and extending below the lower tracks with the respective upper tracks in the upright position of said iower.tracks, and spring means between the outer edges of said tracks and the lower ends of said strips respectively, for resisting pivotally movement of said tracks.

7. A window construction of the type having a window sill, and comprising a pair of cpposed sash tracks, pivotally supported near their lower ends, a cross-piece mounted across the lower ends of said tracks, extending closely adjacent to said sill in upright position of said tracks, and movable therewith in the pivotal movement of said tracks, and releasable locking means. for locking said cross-piece to said track ends, and means preventing downward movement of said cross-piece endwise of said tracks when said locking means is released, but permitting removal of said cross-piece upwardly while said tracks are in angular position.

8. A window construction comprising a pair of opposed sash tracks pivotally supported near their lower ends, and each having a transversely inwardly extending flange at said ends, and a cross-piece removably secured to the lower ends of said tracks, seated on said flanges, and movable with said tracks in their pivotal movement.

9. A window construction comprising ,a pair of opposed sash tracks pivotally supported near their lower ends, and each having a longitudinally extending rib, and a transversely inwardly extending flange at its lower end, and a cross-piece removably secured to the lower ends of said tracks, seated upon said flange, and having notches at its ends for receiving said ribs. HANS MOCKLI. 

